print('введите начальную координату x:')
x=int(input())
print('введите начальную координату y:')
y=int(input())
print('введите начальную координату n:')
n=int(input())

coords = [0,0,10,0,10,10,20,10,20,20,0,20]

if n == 0 and x>=0 and x<=500 and y>=0 and y<=500:
    pass
   else:
       if n > 0 and 0*n+x>=0 and 0*n+y>=0 and 20*n+x<=500 and 20*n+y<=500:
          pass 
      else:
          if n < 0 and 20*n+x>=0 and 20*n+y>=0 and 0*n+x<=500 and 0*n+y<=500:
             pass
         else:
             print('размер фигуры превышает максимальный размер поля')
             exit()
             
             root = Tk()
             root.title("Ит марафон")
             root.geometry("500x500")
             
             canvas = Canvas(bg="white",width=500,heigth=500)
             canvas.pack(anchor=CENTER,expand=1)
             
             canvas.create_polygon(coords[0] *n+x, coords[1] *n+y,
                                   coords[2] *n+x, coords[3] *n+y,
                                   coords[4] *n+x, coords[5] *n+y,
                                   coords[6] *n+x, coords[7] *n+y,
                                   coords[8] *n+x, coords[9] *n+y,
                                   coords[10] *n+x, coords[11] *n+y)
                                   
root.mainloop()
             
             
